8x8led點(diǎn)陣顯示驅(qū)動(dòng)技術(shù)-全文預(yù)覽
【正文】 ● ● 00H，00H，0CH，14H，24H，7FH，04H，00H 數(shù)字“5”代碼建立如下圖所示 1 2 3 4 5 6 7 8 ●●●●● ● ●●●● ● ● ● ● ●●● 00H，00H，72H，51H，51H，51H，4EH，00H 數(shù)字“6”代碼建立如下圖所示 1 2 3 4 5 6 7 8 ●●● ● ● ● ●●●● ● ● ● ● ●●● 00H，00H，3EH，49H，49H，49H，26H，00H 數(shù)字“7”代碼建立如下圖所示 1 2 3 4 5 6 7 8 ●●●●● ● ● ● ● ● ● 00H，00H，40H，40H，40H，4FH，70H，00H 數(shù)字“8”代碼建立如下圖所示 1 2 3 4 5 6 7 8 ●●● ● ● ● ● ●●● ● ● ● ● ●●● 00H，00H，36H，49H，49H，49H，36H，00H 數(shù)字“9”代碼建立如下圖所示 1 2 3 4 5 6 7 8 ●●● ● ● ● ● ●●●● ● ● ● ●●● 00H，00H，32H，49H，49H，49H，3EH，00H 5． 匯編源程序TIM EQU 30HCNTA EQU 31HCNTB EQU 32HORG 00HLJMP STARTORG 0BHLJMP T0XORG 30HSTART: MOV TIM,00HMOV CNTA,00HMOV CNTB,00HMOV TMOD,01HMOV TH0,(655364000)/256MOV TL0,(655364000) MOD 256SETB TR0SETB ET0SETB EASJMP $T0X:MOV TH0,(655364000)/256MOV TL0,(655364000) MOD 256MOV DPTR,TABMOV A,CNTAMOVC A,A+DPTRMOV P3,AMOV DPTR,DIGITMOV A,CNTBMOV B,8MUL ABADD A,CNTAMOVC A,A+DPTRMOV P1,AINC CNTAMOV A,CNTACJNE A,8,NEXTMOV CNTA,00HNEXT: INC TIMMOV A,TIMCJNE A,250,NEXMOV TIM,00HINC CNTBMOV A,CNTBCJNE A,10,NEXMOV CNTB,00HNEX: RETITAB: DB 0FEH,0FDH,0FBH,0F7H,0EFH,0DFH,0BFH,07FHDIGIT: DB 00H,00H,3EH,41H,41H,41H,3EH,00HDB 00H,00H,00H,00H,21H,7FH,01H,00HDB 00H,00H,27H,45H,45H,45H,39H,00HDB 00H,00H,22H,49H,49H,49H,36H,00HDB 00H,00H,0CH,14H,24H,7FH,04H,00HDB 00H,00H,72H,51H,51H,51H,4EH,00HDB 00H,00H,3EH,49H,49H,49H,26H,00HDB 00H,00H,40H,40H,40H,4FH,70H,00HDB 00H,00H,36H,49H,49H,49H,36H,00HDB 00H,00H,32H,49H,49H,49H,3EH,00HEND6． C語(yǔ)言源程序include unsigned char code tab[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f}。delay1()。j++) //from bottom to top 3 time{for(i=0。P1=tabb[7i]。j3。i++){P3=taba[7i]。}}for(j=0。i8。}void main(void){unsigned char i,j。i0。}void delay1(void){unsigned char i,j,k。i0。 5．匯編源程序ORG 00HSTART: NOPMOV R3,3LOP2: MOV R4,8MOV R2,0LOP1: MOV P1,0FFHMOV DPTR,TABAMOV A,R2MOVC A,A+DPTRMOV P3,AINC R2LCALL DELAYDJNZ R4,LOP1DJNZ R3,LOP2MOV R3,3LOP4: MOV R4,8MOV R2,7LOP3: MOV P1,0FFHMOV DPTR,TABAMOV A,R2MOVC A,A+DPTRMOV P3,ADEC R2LCALL DELAYDJNZ R4,LOP3DJNZ R3,LOP4MOV R3,3LOP6: MOV R4,8MOV R2,0LOP5: MOV P3,00HMOV DPTR,TABBMOV A,R2MOVC A,A+DPTRMOV P1,AINC R2LCALL DELAYDJNZ R4,LOP5DJNZ R3,LOP6MOV R3,3LOP8: MOV R4,8MOV R2,7LOP7: MOV P3,00HMOV DPTR,TABBMOV A,R2MOVC A,A+DPTRMOV P1,ADEC R2LCALL DELAYDJNZ R4,LOP7DJNZ R3,LOP8LJMP STARTDELAY: MOV R5,10D2: MOV R6,20D1: MOV R7,248DJNZ R7,$DJNZ R6,D1DJNZ R5,D2RETTABA: DB 0FEH,0FDH,0FBH,0F7H,0EFH,0DFH,0BFH,07FHTABB: DB 01H,02H,04H,08H,10H,20H,40H,80HEND6． C語(yǔ)言源程序include unsigned char code taba[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f}。8X8 一根橫柱：對(duì)應(yīng)的行置0，而列則采用掃描的方法來(lái)實(shí)現(xiàn)。for(i=10。j)。k)for(i=20。j)。j++) //from left to right 3 time{for(i=0。delay1()。i8。}}for(j=0。i++){P3=0x00。j3。P1=tabb[i]。 送顯示代碼過(guò)程如下所示 送第一列線代碼到P3端口，同時(shí)置第一行線為“0”，其它行線為“1”，延時(shí)2ms左右，送第二列線代碼到P3端口，同時(shí)置第二行線為“0”，其它行線為“1”，延時(shí)2ms左右，如此下去，直到送完最后一列代碼，又從頭開始送。unsigned char ta。TL0=(655363000)%256。while(1){。P1=digittab[tb][ta]。if(timecount==333){timecount=0。 2． 電路原理圖 3． 硬件系統(tǒng)連線 (1)． 把“單片機(jī)系統(tǒng)”區(qū)域中的P1端口用8芯排芯連接到“點(diǎn)陣模塊”區(qū)域中的“DR1－DR8”端口上； (2)． 把“單片機(jī)系統(tǒng)”區(qū)域中的P3端口用8芯排芯連接到“點(diǎn)陣模塊”區(qū)域中的“DC1－DC8”端口上； (3)． 把“單片機(jī)系統(tǒng)”“獨(dú)立式鍵盤”區(qū)域中的SP1端子上； 4． 程序設(shè)計(jì)內(nèi)容 (1)． “★”在8X8LED點(diǎn)陣上顯示圖如下圖所示 1 2 3 4 5 6 7 8 ● ● ●●● ●●●●●●● ●●● ●● ●● ● ● 12H，14H，3CH，48H，3CH，14H，12H，00H (2)． “●”在8X8LED點(diǎn)陣上顯示圖如下圖所示 1 2 3 4 5 6 7 8
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